Lockhead Drill Press Adjustable Wood Bit, 2 Cutters: 5/8"-1" and 1"-1-3/4", 9/32" Shank Size, 5-1/2" Overall Length, Wedge Type Blade Lock and Slow Feed SScrew Point, Special Precision Ground Shank Has 3 Equally Spaced Flats For Use In Drill Presses Having 3 Jaw Chucks, Pouched.